JPS5853158B2 - Automobile opening/closing body locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for locking an opening/closing body such as a side door of an automobile, and particularly a lock suitable as a door locking device to be attached to the upper or lower end of a side door of an automobile without a center pillar. Regarding equipment.

Figure 1 shows a perspective view of the exterior of a car that uses double-sided side doors without a center pillar. Conventional door lock devices for such cars include those shown in Figures 2 and 3. be.

FIG. 2 shows a perspective view of a door equipped with a conventional door locking device as seen from inside the vehicle, where 1L12 is an outer panel and an inner panel that constitute the door 1, and 6 is one end fixed to the inner panel 12 of the door 1. The seatbelt is wound around a tractor 61, inserted halfway through a through ring 62 fixed to the sash, and fixed at the other end to the inner panel 12.
The passenger is held in the seat by fitting into a buckle (not shown) fixed to the seat.

3 is an upper lock mechanism attached to the upper end of door 1;
is a lower lock mechanism attached to the lower end of door 1,
These locking mechanisms 3 and 4 and a striker attached to the vehicle body facing them constitute a locking device.

FIG. 3 is a sectional view taken along the line ■--■ in FIG. 2 with the door closed, showing the upper locking device, but the lower locking device has exactly the same structure.

In FIG. 3, 2a and 2b are a roof and a roof sight rail forming the vehicle body 2, respectively, and 5 is fitted into a hole in a mounting plate 52 attached to the roof sight rail 2b, and a mounting hole provided in the roof sight rail 2b. The striker is attached by fitting the proximal threaded part 5a into the base end threaded part 5a and screwing the nut 51 into the threaded part 5a.

31 is a base plate fixed to the inner surface of the inner panel 12 of the door 1 with screws 40;
1, a latch 32 that engages and disengages from the striker 5 is always restricted from rotating clockwise in FIG. The latch 32 and the locking plate 34 are always prevented from rotating counterclockwise in FIG. 3 by a spring (not shown) and are supported by the locking plate shaft 35.
An open lever 38 to which an open rod 37 for engaging and releasing is connected is also pivotally supported by an open lever shaft 39.

In such a conventional locking device, when the open rod 37 is pulled in the direction of the arrow in FIG.
8 rotates counterclockwise about shaft 39, and rotates locking plate 34 clockwise about shaft 35 to disengage latch 32, so that latch 32 is not shown. Shaft 3 due to spring
3 in a clockwise direction, the door 1 is disengaged from the striker 5, and the door 1 can be opened.

When the door 1 is closed, each part rotates in the opposite direction to the above, returning to the state shown in the third figure, and the striker 5 and latch 32
can be engaged to hold the door 1 in a closed state.

However, with this conventional locking device, a large load is applied to the door sash through the seat belt 6 due to the abnormal inertia of the occupant during a frontal collision, causing the door sash to deform as shown in Figure 4, or during a side collision. If the door 1 is subjected to a bending load centered around the engagement area between the upper and lower latches 32 and the striker 5, and the door sash deforms, the panel at the door lock attachment part will break, causing damage as shown in Figure 5. In this case, the striker 5 and the latch 32 become disengaged and the occupant is thrown out of the vehicle, or an object during a side collision enters the vehicle interior, compressing the occupant's living space and threatening the occupant's life.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and is to provide an automobile capable of improving occupant protection by reliably maintaining engagement between a latch and a striker even if the opening/closing body is deformed during a collision. The purpose of the present invention is to provide an opening/closing body locking device.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 6 is a perspective view showing an embodiment of the locking device of the present invention, and FIG. 7 is a perspective view showing a case where the locking device of the present invention shown in FIG. 6 is used as an upper locking device for a door, and a conventional door locking device shown in FIG. FIG. 2 is a cross-sectional view taken at exactly the same location as in FIG.

The U-shaped base plate 31 is fixed to the inner panel 12 of the door 1 with screws 40 at its bottom surface 31a, and a latch 32 that is pivotally supported 33 on the base plate 31 is arranged in a space X inside the door 1.

On this base plate 31, a locking plate 34 that engages and disengages with a latch 32 and an open lever blade that engages and disengages with this locking plate 34 are respectively pivoted at 35 as in the conventional case.
．． 39 has been done.

On the other hand, a U-shaped striker 5 is fixed to a roof sight rail 2b of the vehicle body 2 with a nut 51 and is arranged to protrude from the vehicle body 2.

A striker entry notch 12a is formed in a portion of the door inner panel 12 facing the latch 32, and when the door is closed, the striker 5 enters the door through the notch 12a and engages with the latch 32 to maintain the closed state. It is supposed to be done.

Note that at this time, the latch 32 and locking plate 34
The open lever 38 is engaged when the door is opened.
By operating the locking plate 34, the locking plate 34 is disengaged from the latch 32, and the latch 32 is disengaged from the striker 5, thereby opening the door 1.

Therefore, one side 31b of the base plate 31 inside the door 1
, a roughly U-shaped hook 3 straddles the other side surface 31c.
6 is fixed.

This hook 36 consists of leg portions 36a fixed to both side surfaces of the base plate 310, and a stopper portion 36b connecting the leg portions 36a to each other.
extends roughly along the direction in which the striker enters, and is formed to cover the engaging portion P between the latch 32 and the striker 5 from above.

Therefore, the stopper portion 36b of the hook 36 is on the same plane as the engaging portion P between the latch 32 and the striker 5, that is, on one plane perpendicular to the latch shaft 33.

When a large load is applied to the door 1 during a frontal collision or a side collision, and the door 1 deforms around the retaining part P between the latch 32 and the striker 5 as a fulcrum, the striker 5 will come out of the latch 32 as shown in FIG. Even if the stopper part 36b of the hook 36 and the latch 32 hold the striker 5 on the same surface, the striker 5 is surely restrained from leaving the door 1.
It is designed to ensure that the door remains closed.

Since the embodiment of the present invention has the above-described configuration, the open rod 3
It is clear that the latch 32 and the striker 5 can be disengaged by the pulling operation of the door 1 to open the door 1, and the latch 32 and the striker 5 can be engaged by the closing operation of the door 1 to keep the door 1 in the closed state. be.

Therefore, even if the door 1 is deformed using the vicinity of the engagement part P between the upper and lower latches 32 and the striker 5 as a fulcrum due to a frontal collision or a side collision, the hook 36 works together with the latch 32 to clamp the striker 5. Since the striker 5 does not come into contact with the hook 36 and come off from the latch 32 as shown in FIG. 8, the occupant is not thrown out of the vehicle.
There is no risk of objects entering the vehicle during a side collision and compressing the living space of the occupants, thereby threatening the lives of the occupants, further increasing safety.

Note that the present invention can be similarly applied to a lower lock device for a side door.

Here, we will discuss the relationship between the hook 36, the latch 32, and the striker 5, especially the clamping state.The width dimension B1 of the stopper portion 36b of the hook 36 is formed to be slightly larger than the width dimension B2 of the striker 50 (B1>B2). On the other hand, the length L0 of the stopper portion 36b is approximately the same as the length L2 of the striker 50 into the base plate 31 (Ll''=iL2
).

(See FIG. 7) Moreover, the gap C from the lower surface of the stopper portion 36b to the upper end of the latch 32 is set to be smaller than the outer diameter of the striker 5 in the normal door closed state (FIG. 7).

Therefore, when the door 1 is deformed (FIG. 8), the hook 36 moves together with the latch 32, but the striker 5 moves with the hook 3.
6 and the latch 32, respectively, on the same surface (one surface perpendicular to the latch shaft 33).

In this clamped state, the stopper portion 36b of the hook 36 and the latch 32 form a so-called wedge shape, so that the striker 5 is firmly restrained.

As described above, according to the present invention, even if the door deforms around the engagement portion between the striker and the latch during a frontal collision or a side collision, the striker can be firmly held and the door can be kept closed, so that the occupant can It exhibits a practically beneficial effect of extremely excellent occupant protection performance without being released outside the vehicle or impairing occupant restraint.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the exterior of a car with double-sided side doors without a center pillar, Figure 2 is a perspective view of a door equipped with a conventional door locking device as seen from inside the car, and Figure 3 is a perspective view of the door when it is closed. 2 is a sectional view taken along the line ■-■ in FIG. 2, FIG. 4 is a perspective view showing a case where the door sash portion is deformed in FIG. 2, and FIG. 5 is a sectional view taken along the line V-V in FIG. , FIG. 6 is a perspective view showing one embodiment of the locking device of the present invention, and FIG.
The figure is a sectional view showing the case where the locking device of the present invention shown in FIG. 6 is used as an upper locking device of a door at exactly the same point as the conventional door locking device of FIG. 3, and FIG. FIG. 7 is a sectional view when the door sash portion is deformed in FIG. 7; 1...Door (opening/closing body), 11.12...
・Outer panel and inner panel of door 1, 2...
...Car body, 5...Striker, 32...
... Latch, 33 ... Latch shaft, 31
...Base plate, 36...Hook.

Claims (1)

[Scope of Claims] 1. A base plate is fixed to the opening/closing body, a latch pivotally supported on the base plate is arranged inside the opening/closing body, and a striker protruding from the vehicle body enters the inside of the opening/closing body when the opening/closing body is closed. In the opening/closing body locking device for an automobile, the opening/closing body locking device is configured to have a substantially U-shape formed on the base plate, extending substantially along the direction in which the striker enters, and covering an engagement portion between the latch and the striker; An opening/closing body locking device for an automobile comprising a hook that cooperates with the latch to clamp the striker on the same surface when the opening/closing body is deformed using a fulcrum near the engagement portion between the latch and the striker.